Jo, Jea Woong Seo, Myung-Seok Jung, Jae Woong Park, Joon-Suh Sohn, Byeong-Hyeok Ko, Min Jae Son, Hae Jung 2024-01-19T23:30:54Z 2024-01-19T23:30:54Z 2021-09-03 2018-02-28 0378-7753 https://pubs.kist.re.kr/handle/201004/121688 The control of the optoelectronic properties of the interlayers of perovskite solar cells (PSCs) is crucial for achieving high photovoltaic performances. Of the solution-processable interlayer candidates, NiOx is considered one of the best inorganic hole-transporting layer (HTL) materials. However, the power conversion efficiencies (PCEs) of NiOx-based PSCs are limited by the unfavorable contact between perovskite layers and NiOx HTLs, the high density of surface trap sites, and the inefficient charge extraction from perovskite photoactive layers to anodes. Here, we introduce a new organic-inorganic double HTL consisting of a Cu:NiOx thin film passivated by a conjugated polyelectrolyte (PhNa-1T) film. This double HTL has a significantly lower pinhole density and forms better contact with perovskite films, which results in enhanced charge extraction. As a result, the PCEs of PSCs fabricated with the double HTL are impressively improved up to 17.0%, which is more than 25% higher than that of the corresponding PSC with a Cu:NiOx HTL. Moreover, PSCs with the double HTLs exhibit similar stabilities under ambient conditions to devices using inorganic Cu:NiOx. Therefore, this organic-inorganic double HTL is a promising interlayer material for high performance PSCs with high air stability. English ELSEVIER SCIENCE BV STABLE PLANAR PEROVSKITE LOW-TEMPERATURE EXTRACTION LAYER BASE ADDUCT EFFICIENT CRYSTALLIZATION DEPOSITION STABILITY Development of organic-inorganic double hole-transporting material for high performance perovskite solar cells Article 10.1016/j.jpowsour.2017.12.024 1 JOURNAL OF POWER SOURCES, v.378, pp.98 - 104 JOURNAL OF POWER SOURCES 378 98 104 scie scopus 000427316300012 2-s2.0-85037989401 Chemistry, Physical Electrochemistry Energy & Fuels Materials Science, Multidisciplinary Chemistry Electrochemistry Energy & Fuels Materials Science Article STABLE PLANAR PEROVSKITE LOW-TEMPERATURE EXTRACTION LAYER BASE ADDUCT EFFICIENT CRYSTALLIZATION DEPOSITION STABILITY Perovskite solar cell Hole-transporting layer Interfacial engineering Photovoltaics Conjugated polyelectrolyte